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Apparatus and method for transmitting control information in a multi-component carrier system

a carrier system and control information technology, applied in the field of wireless communication, can solve the problems of large power consumption and the inability to use the entire data information accessible through control information, and achieve the effect of easy solution

Inactive Publication Date: 2013-02-28
PANTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent text describes a way to send information about a secondary component carrier through a primary component carrier. This helps a UE to understand the format of the secondary component carrier and quickly detect and fix errors in the PDCCH and PDSCH. The technical effect of this is improved efficiency and accuracy in communication between the UE and the network.

Problems solved by technology

To increase the bandwidth in order to increase the transmission capacity may be considered to be essential, but to support a great bandwidth even when the quality of service required is low may cause great power consumption.
In this process, if control information on a component carrier on which data is chiefly transmitted is not transmitted because an error occurs in the control information, there is a problem in that the entire data information that can be accessed through the control information may not be used.

Method used

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Embodiment Construction

[0024]Hereinafter, in this specification, some embodiments are described in detail with reference to exemplary drawings. It is to be noted that in assigning reference numerals to elements in each of the drawings, the same reference numerals designate the same elements throughout the drawings although the elements are shown in different drawings. Furthermore, in describing the embodiments of the present invention, a detailed description of the known functions and constructions will be omitted if it is deemed to make the gist of the present invention unnecessarily vague.

[0025]Furthermore, in describing the elements of this specification, terms, such as the first, second, A, B, a, and b, may be used. However, the terms are used to only distinguish one element from the other element, but the essence, order, or sequence of the elements is not limited by the terms.

[0026]Furthermore, in this specification, a wireless communication network is described as a target, and tasks performed in th...

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Abstract

A method for transmitting control information in a multi-component carrier system comprises: configuring downlink control information containing a format indicator that indicates the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols for a control domain; configuring the control domain in accordance with the number of OFDM symbols; transmitting a physical downlink control channel (PDCCH) containing the thus-configured downlink control information; and transmitting a physical control format indicator channel, containing the format indicator, to the control domain. According to the exemplary embodiments, multiple errors in detecting a PDCCH and a physical downlink shared channel (PDSCH) caused by an error in detecting a physical control format indicator channel (PCFICH) for a sub-component carrier can be easily resolved.

Description

BACKGROUND[0001]1. Field[0002]The present invention relates to wireless communication and, more specifically, to an apparatus and method for transmitting control information indicative of the format of a control channel in a multi-component carrier system.[0003]2. Discussion of the Background[0004]As the candidates of the next-generation wireless communication system, 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) and Institute of Electrical and Electronics Engineers (IEEE) 802.16m are being developed. The 802.16m standard involves two aspects that are the past continuity of the modification of the existing 802.16e standard and the future continuity of a standard for the next-generation IMT-Advanced system. Accordingly, the 802.16m standard is required to maintain compatibility with a mobile WiMAX system based on the 802.16e standard and also satisfy all advanced requirements for the IMT-Advanced system.[0005]In general, a wireless communication system uses one ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04W72/04
CPCH04J11/0073H04L5/0007H04L5/0094H04L5/0053H04L5/001
Inventor HONG, SUNG KWON
Owner PANTECH CO LTD
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